How to undeploy (delete) a Java application

Hi all,

i have deployed using the SAP Netweaver developer studio and the SDM tool a specific Java application.

As i delete it on my PC i can not re-deploy it because the system tells me that there is already a application with the same name.

How can i delete it directly on the server using for example the deploytool tool or another tool ?

Thank in advance,

Eric.